private void installValueChangeHandler()
{
// yep I know, no generics... I don't know or care what the type is since the accessor handles
// all that. And since ValueChangeHandler doesn't allow for ValueChangeHander<? super T> I can't
// add a ValueChangeHandler<Object> to a ValueModel<?>
this.source.addValueChangeHandler(new ValueChangeHandler()
{
public void onValueChange(ValueChangeEvent bValueChangeEvent)
{
handleSourceModelChange();
}